Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1986-06-05
1988-04-19
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250231R, H01J 516
Patent
active
047391618
ABSTRACT:
A fine displacement transducer, wherein either end of a first and a second optical fibers which are mutually adjacent are respectively provided in alignment with each other opposed to the reflection surface and the illuminating light is made incident from the one end of the first optical fiber and the light irradiated from the other end of the first optical fiber is made to illuminate its reflection surface, while the reflected light therefrom is received by the second optical fiber, so that the amount of displacement of the reflection surface relative to both end surfaces of the second optical fiber can be detected from the variation of intensity of the received light, and a measuring system wherein the reflected light from the reflection surface is received by either of the second or a separately provided third optical fiber to detect the intensity of received light for converting it into the electric signal.
REFERENCES:
patent: 3778157 (1973-12-01), Brelot et al.
patent: 3792928 (1974-02-01), Poilleux
patent: 4358960 (1982-11-01), Porter
patent: 4599711 (1986-07-01), Cuomo
patent: 4617460 (1986-10-01), Tokunaga et al.
Moriyama Shigeo
Uchida Fumihiko
Hitachi , Ltd.
Nelms David C.
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